This tag can be used for:
1) A long range weapon mounted in a satellite.
2) A type of fictional weapon in the After War Gundam X universe. Equipped on the Gundam X and GX-Bits, this extremely powerful beam cannon is powered by a microwave beam from a moon station and is capable of destroying a space colony.
The Gundam Double X is equipped with the Twin Satellite Cannon, a doubled version which has more than twice the firepower of the original.